September 11

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September 11 is the 254th day of the year in the Gregorian calendar (255th in leap years). There are 111 days remaining.

It is usually the first day of the Coptic calendar and Ethiopian calendar (in the period AD 1900 to AD 2099).

The terms "September 11", "11th September", and "9/11" have been widely used in the Western media as a shorthand for the September 11, 2001 attacks on the World Trade Center and The Pentagon in the United States of America.




1182 to 1899

1900 to 1999


1161 to 1899

1900 to 1999

2000 onwards


Also see September 11 (Eastern Orthodox liturgics)

Other observances

External links

September 10 · September 12 · August 11 · October 11 · more historical anniversaries


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